CN109467658A - A kind of preparation method and preparation facilities of modified graphene slurry - Google Patents
A kind of preparation method and preparation facilities of modified graphene slurry Download PDFInfo
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- CN109467658A CN109467658A CN201811344675.2A CN201811344675A CN109467658A CN 109467658 A CN109467658 A CN 109467658A CN 201811344675 A CN201811344675 A CN 201811344675A CN 109467658 A CN109467658 A CN 109467658A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F292/00—Macromolecular compounds obtained by polymerising monomers on to inorganic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B01F31/83—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations comprising a supplementary stirring element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/10—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to inorganic materials
Abstract
The embodiment of the present application shows the preparation method and preparation facilities of a kind of modified graphene slurry, method includes: by graphite, intercalator, compound between graphite layers are obtained after the reaction of oxidant mixing, compound between graphite layers are subjected to expanding treatment again, obtain expanded graphite, the backward expanded graphite, dispersing agent, stabilizer, cosolvent is uniformly mixed, obtain the first mixed liquor, the first mixed liquor is ultrasonically treated again, obtain graphene slurry intermediate, expanded graphite and dispersing agent is added to graphene slurry intermediate again, obtain the second mixed liquor, finally second mixed liquor is ultrasonically treated, obtain the modified graphene slurry, improve technology stability, polymerization knot kettle probability is effectively reduced；Modified graphene slurry preparation device by uniformly mixed raw material investment stirring ontology to be mixed, due to there is multiple stirring blades, so that stirring is more uniform, improves technology stability, polymerization knot kettle probability is effectively reduced when in use.
Description
Technical field
The present invention relates to technical field of graphene, in particular to the preparation method and preparation dress of a kind of modified graphene slurry
It sets.
Background technique
Graphene be it is a kind of as carbon atom it is tightly packed made of two dimensional crystal material, it is excellent because it is with unique structure
The performances such as different electricity, mechanics, optics, chemistry and calorifics become the hot spot of many people research.EPS, that is, expandable polystyrene,
Foaming agent is added using polystyrene resin beads, while heating is softened, and is generated gas, is formed a kind of rigid closed cell structure
Foamed plastics, have two kinds of white material EPS, graphite EPS products at present.Wherein, white material EPS thermal coefficient is 039 grade, graphite EPS
Thermal coefficient is 032 grade.White material EPS is mainly used in the packaging of product food, and graphite EPS is because of the white material EPS of its thermal conductivity ratio
It is low, it has been gradually opened in the market of building exterior wall heat preserving, but EPS product mechanical strength is lower at present, limits EPS manufactured goods
Application, it is also desirable to develop the lower EPS product of thermal coefficient, graphene EPS comes into being.Graphene is answered EPS industry
With in the process, graphene is directly appended in EPS polymerization system, because graphene specific surface area is too big and graphene edge some
Group, it may occur that polymerization inhibitor effect causes polymerization reaction time to extend, and general polymerization process is up to 20-30h, and polymerization system is viscous
Degree is corresponding to be increased, serious directly to occur to tie kettle phenomenon.
Summary of the invention
To overcome the problems in correlation technique, the present invention provides the preparation method and system of a kind of modified graphene slurry
Standby device improves technology stability, polymerization knot kettle probability is effectively reduced.
First aspect of the embodiment of the present invention discloses a kind of preparation method of modified graphene slurry, the modified graphene
The preparation method of slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Optionally, the intercalator is Na3AlF6And K3AlF6Mixed liquor.
Optionally, the oxidant is one of potassium permanganate, potassium bichromate and potassium chlorate.
Optionally, the weight ratio of the graphite, the intercalator and the oxidant is 1:5:3.
Optionally, the dispersing agent is the mixed liquor of paraffin, stearic acid and calcium stearate.
Optionally, the stabilizer is polyethylene wax.
Optionally, the cosolvent is sodium benzoate, one of sodium salicylate and p-aminobenzoic acid.
Using first aspect provide a kind of modified graphene slurry preparation method, first by by graphite, intercalator,
Compound between graphite layers are obtained after the reaction of oxidant mixing, then compound between graphite layers are subjected to expanding treatment, obtain expansion stone
Ink, the backward expanded graphite, dispersing agent, stabilizer, cosolvent be uniformly mixed, obtain the first mixed liquor, then to
One mixed liquor is ultrasonically treated, and obtains graphene slurry intermediate, then to graphene slurry intermediate be added expanded graphite and
Dispersing agent obtains the second mixed liquor, is finally ultrasonically treated second mixed liquor, obtains the modified graphene slurry
Material, the present invention provide the preparation method and preparation facilities of a kind of modified graphene slurry, improve technology stability, be effectively reduced it is poly-
Close knot kettle probability.
According to the second aspect of the disclosure, a kind of modified graphene slurry preparation device is provided, described device includes: stirring
Ontology and blender, the blender include stirring power device and stirring rod, and the stirring power device is for driving stirring
Stick rotation, the stirring power device are set to the outside of the stirring ontology；
The stirring rod is set to the inside of the stirring ontology, and the stirring power device includes stirring motor, the stirring
Motor drives the stirring rod to rotate by gear, and one end of the stirring rod is fixedly connected with gear, the stirring rod it is another
One end is fixedly connected with bearing, is provided with multiple stirring blades in the circumferential wall of the stirring rod, the stirring blade it is separate
One section of the central axis of the stirring rod is provided with saddle weight；
Feed inlet is provided at the top of the stirring ontology, the bottom of the stirring ontology is provided with discharge port, the discharge port
It is connected with discharge nozzle.
Optionally, one section of the central axis far from the stirring rod of the stirring blade is provided with saddle weight.
A kind of modified graphene slurry preparation device shown in second aspect, described device is by the expanded graphite, dispersion
Agent, stabilizer, cosolvent are uniformly mixed, and described device includes: stirring ontology and blender, and the blender includes stirring
Power device and stirring rod, for the stirring power device for driving stirring rod to rotate, the stirring power device is set to institute
The outside of stirring ontology is stated, the stirring rod is set to the inside of the stirring ontology, and the stirring power device includes stirring
Motor, the stirring motor drive the stirring rod to rotate by gear, and one end of the stirring rod is fixedly connected with gear, institute
The other end for stating stirring rod is fixedly connected with bearing, and multiple stirring blades are provided in the circumferential wall of the stirring rod, described to stir
It mixes and is provided with feed inlet at the top of ontology, the bottom of the stirring ontology is provided with discharge port, and the discharge port is connected with discharging
Pipe；A kind of modified graphene slurry preparation device shown in second aspect when in use puts into uniformly mixed raw material to be mixed
It stirs in ontology, stirring motor drives stirring rod rotation, due to there is multiple stirring blades, enables to stir more uniform, mentions
Polymerization knot kettle probability is effectively reduced in high technology stability.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of flow diagram of the preparation method of modified graphene slurry provided in an embodiment of the present invention；
Fig. 2 is a kind of overall schematic of modified graphene slurry preparation device provided in an embodiment of the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Embodiment one
It is a kind of preparation method of modified graphene slurry provided in an embodiment of the present invention, which is characterized in that described referring to Fig. 1
The preparation method of modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Graphene is not modified to be directly appended to polymerize in EPS system, easily leads to polymerization inhibitor effect and knot kettle phenomenon even occurs,
After polymerizeing EPS particle reluctantly, foamed re-pack surveys performance, and tensile strength can improve 5-20% than national standard 0.1Mpa, leads
Hot coefficient is substantially without being substantially reduced；Modified graphene, which is added in EPS system, to be polymerize, and can solve polymerization inhibitor effect and knot kettle is overcome to ask
Topic, last tensile strength can improve 50%-100% than national standard 0.1Mpa, and 032 grade of national standard of thermal conductivity ratio reduces
1%-5%；Graphene slurry provided by the invention can improve dispersion stabilization of the graphene in EPS polymerization system, and graphite
Alkene is sufficiently grafted after modified, with styrene monomer, improves the mechanical strength of graphene styrofoam, and modified graphene is being sent out
It is sufficiently wrapped up when bubble re-packs by EPS foaming micropore, the laminated structure of graphene is evenly distributed on EPS microcellular structure, can be made
Light, heat reflect repeatedly in micropore cavity, to play the role of trap heat, improve thermal insulation property.
The preparation method of modified graphene slurry provided by the invention, first by by graphite, intercalator, oxidant mixing
Obtain compound between graphite layers after reaction, then compound between graphite layers be subjected to expanding treatment, obtain expanded graphite, backward institute
It states expanded graphite, dispersing agent, stabilizer, cosolvent to be uniformly mixed, obtains the first mixed liquor, then carry out to the first mixed liquor
Ultrasonic treatment, obtains graphene slurry intermediate, then expanded graphite and dispersing agent is added to graphene slurry intermediate, obtains the
Second mixed liquor is finally ultrasonically treated by two mixed liquors, obtains the modified graphene slurry, and the present invention provides one
The preparation method and preparation facilities of kind modified graphene slurry improve technology stability, polymerization knot kettle probability are effectively reduced.
Embodiment two is a kind of preparation method for modified graphene slurry that the preferred embodiment of the invention provides, feature
Be, the preparation method of the modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Wherein, the intercalator is Na3AlF6And K3AlF6Mixed liquor.It is intercalator with alkali metal element, passes through intercalation
Agent and graphite hybrid reaction obtain compound between graphite layers.Compound between graphite layers accelerate the removing of graphite in terms of two
Journey.Firstly, the insertion of intercalator increases the interfloor distance of graphite, the Van der Waals force of graphite layers is weakened.Secondly, lithium, potassium,
After the insertion of the alkali metal such as caesium, one is electronically entered in graphite lattice, keeps crystal face negatively charged, electrostatic repulsion is generated, so that graphite
Crystal, which is easy to happen, to cut separation.Graphene film is obtained finally by ultrasound and centrifugal treating.But the graphite that this method is prepared
Alkene piece is multilayer (10 layers of >), and thickness is greater than tens nanometers, and the intercalated material being added can destroy the sp2 hydridization knot of graphene
Structure, so that the physical and chemical properties of graphene are affected.
Embodiment three is a kind of preparation method for modified graphene slurry that the preferred embodiment of the invention provides, feature
Be, the preparation method of the modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Wherein, the oxidant is one of potassium permanganate, potassium bichromate and potassium chlorate.Potassium permanganate, dichromic acid
Potassium and potassium chlorate act not only as oxidant, can also further provide alkali metal element potassium, can be simultaneously as slotting
Layer agent, so that the content of the compound between graphite layers obtained is more.
Example IV is a kind of preparation method for modified graphene slurry that the preferred embodiment of the invention provides, feature
Be, the preparation method of the modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Wherein, the weight ratio of the graphite, the intercalator and the oxidant is 1:5:3.
Embodiment five is a kind of preparation method for modified graphene slurry that the preferred embodiment of the invention provides, feature
Be, the preparation method of the modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Wherein, the dispersing agent is the mixed liquor of paraffin, stearic acid and calcium stearate.The effect of dispersing agent is using profit
Hygroscopic water powder reduces time and energy required for completing dispersion process, stablizes dispersed pigment dispersion, modified pigment grain
Sublist surface properties adjust the motility of pigment particles, are embodied in the following aspects: shorten jitter time, improves gloss,
Tinting strength, tinting power and covering power are improved, improves color developing and toning property, prevents floating, prevent from flocculating, prevent from settling.Although paraffin
Belong to external lubricant, but be nonpolar linear hydrocarbon, metal surface cannot be soaked, that is to say, that the resins such as polyvinyl chloride cannot be prevented
Adhesion metallic walls, only with stearic acid, calcium stearate etc. and used time, competence exertion synergistic effect.
Embodiment six is a kind of preparation method for modified graphene slurry that the preferred embodiment of the invention provides, feature
Be, the preparation method of the modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Wherein, the stabilizer is polyethylene wax.Polyethylene wax (PE wax), also known as macromolecule wax abbreviation polyethylene wax.Cause
Its excellent cold resistance, heat resistance, chemical resistance and wearability and be widely used.In normal production, this part wax is made
It can be applied directly in polyolefin processing for a kind of additive, it can increase the gloss and processing performance of product.As lubricant,
Its chemical property is stable, electrical property is good.Polyethylene wax and polyethylene, polypropylene, poly- cerinic acid ethylene, EP rubbers, butyl rubber
Glue intermiscibility is good.The demoulding of polyethylene, polypropylene, the mobility of ABS and polymethyl methacrylate, polycarbonate can be improved
Property.PVC is compared with other exterior lubricants, polyethylene wax has stronger internal lubrication effect.
Embodiment six is a kind of preparation method for modified graphene slurry that the preferred embodiment of the invention provides, feature
Be, the preparation method of the modified graphene slurry the following steps are included:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
Wherein, the cosolvent is sodium benzoate, one of sodium salicylate and p-aminobenzoic acid.Insoluble drug
Complex compound, associated matter or the double salt etc. between shla molecule are formed, in a solvent with the third substance of addition to increase drug
Solubility in a solvent, this third substance are known as cosolvent (hydrotropicagent).Cosolvent is water-soluble, mostly
Low molecular compound, with drug formed complex compound after can several times or even dozens of times increase drug solubility.
A kind of modified graphene slurry preparation device shown in second aspect, described device be used for by the expanded graphite,
Dispersing agent, stabilizer, cosolvent are uniformly mixed, and described device includes: stirring ontology 1 and blender 2, the blender 2
Including stirring power device 21 and stirring rod 22, the stirring power device 21 is for driving stirring rod 22 to rotate, the stirring
Power device 21 is set to the outside of the stirring ontology 1；
The stirring rod 22 is set to the inside of the stirring ontology 1, and the stirring power device 21 includes stirring motor 211,
The stirring motor 211 drives the stirring rod 22 to rotate by gear, and one end of the stirring rod 22 is fixedly connected with gear,
The other end of the stirring rod 22 is fixedly connected with bearing, is provided with multiple stirring blades in the circumferential wall of the stirring rod 22
222；
The top of the stirring ontology 1 is provided with feed inlet 11, and the bottom of the stirring ontology 1 is provided with discharge port 12, described
Discharge port 12 is connected with discharge nozzle 13.
When in use by uniformly mixed raw material investment stirring ontology 1 to be mixed, stirring motor 211 drives stirring rod 22
Rotation enables to stir more uniform due to there is multiple stirring blades 222, improves technology stability, polymerization knot is effectively reduced
Kettle probability.
As preferred embodiment, one end setting of the central axis far from the stirring rod 22 of the stirring blade 222
There is saddle weight 223.Saddle weight 223 can increase the weight of stirring blade 222, improve the dynamics of stirring, enhance mixing effect.
Those skilled in the art will readily occur to its of the application after considering specification and practicing application disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by above
Claim is pointed out.
It should be understood that the application is not limited to the accurate process for being described above and being shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (9)
1. a kind of preparation method of modified graphene slurry, which is characterized in that the preparation method packet of the modified graphene slurry
Include following steps:
After graphite, intercalator, oxidant mixing reaction treatment, compound between graphite layers are obtained；
The compound between graphite layers are subjected to expanding treatment, obtain expanded graphite；
The expanded graphite, dispersing agent, stabilizer, cosolvent are uniformly mixed, the first mixed liquor is obtained；
First mixed liquor is ultrasonically treated, graphene slurry intermediate is obtained；
Expanded graphite and dispersing agent are added into the graphene slurry intermediate, obtains the second mixed liquor；
Second mixed liquor is ultrasonically treated, the modified graphene slurry is obtained.
2. a kind of preparation method of modified graphene slurry according to claim 1, which is characterized in that the intercalator is
Na3AlF6And K3AlF6Mixed liquor.
3. a kind of preparation method of modified graphene slurry according to claim 1, which is characterized in that the oxidant is
One of potassium permanganate, potassium bichromate and potassium chlorate.
4. a kind of preparation method of modified graphene slurry according to claim 1, which is characterized in that the graphite, institute
The weight ratio for stating intercalator and the oxidant is 1:5:3.
5. a kind of preparation method of modified graphene slurry according to claim 1, which is characterized in that the dispersing agent is
The mixed liquor of paraffin, stearic acid and calcium stearate.
6. a kind of preparation method of modified graphene slurry according to claim 1, which is characterized in that the stabilizer is
Polyethylene wax.
7. a kind of preparation method of modified graphene slurry according to claim 1, which is characterized in that the cosolvent is
Sodium benzoate, one of sodium salicylate and p-aminobenzoic acid.
8. a kind of modified graphene slurry preparation device, which is characterized in that described device is used for the expanded graphite, dispersion
Agent, stabilizer, cosolvent are uniformly mixed, and described device includes: stirring ontology (1) and blender (2), the blender
It (2) include stirring power device (21) and stirring rod (22), the stirring power device (21) is for driving stirring rod (22) to turn
Dynamic, the stirring power device (21) is set to the outside of stirring ontology (1)；
The stirring rod (22) is set to the inside of stirring ontology (1), and the stirring power device (21) includes stirring electricity
Machine (211), the stirring motor (211) drive the stirring rod (22) to rotate by gear, one end of the stirring rod (22)
It is fixedly connected with gear, the other end of the stirring rod (22) is fixedly connected with bearing, in the circumferential wall of the stirring rod (22)
It is provided with multiple stirring blades (222)；
It is provided with feed inlet (11) at the top of the stirring ontology (1), the bottom of stirring ontology (1) is provided with discharge port
(12), the discharge port (12) is connected with discharge nozzle (13).
9. a kind of modified graphene slurry preparation device according to claim 8, which is characterized in that the stirring blade
(222) one end of the central axis far from the stirring rod (22) is provided with saddle weight (223).
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| CN112892873A (en) * | 2021-01-18 | 2021-06-04 | 湖南有色金属研究院 | Method for separating ultrafine graphite flotation concentrate from impurities |
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| CN107161993A (en) * | 2017-07-03 | 2017-09-15 | 北京旭碳新材料科技有限公司 | High concentration graphene slurry and preparation method thereof and device |
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| CN112892873A (en) * | 2021-01-18 | 2021-06-04 | 湖南有色金属研究院 | Method for separating ultrafine graphite flotation concentrate from impurities |
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